Wikicollecting's guide to the value of Supermen of America rings. A Supermen of America ring value is the price of the novelty rings issued by National Periodical Publications in 1940 to the 1,600 hundred members of the Supermen of America club. These rings are now some of the earliest and most sought-after examples of Superman memorabilia on the collectors market, and only 21 are believed to remain in existence. There is known to be one in mint condition worth $30,000.